Commit | Line | Data |
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5033f43c | 1 | /* sound/soc/samsung/pcm.c |
357a1db9 JB |
2 | * |
3 | * ALSA SoC Audio Layer - S3C PCM-Controller driver | |
4 | * | |
5 | * Copyright (c) 2009 Samsung Electronics Co. Ltd | |
df8ad335 | 6 | * Author: Jaswinder Singh <jassisinghbrar@gmail.com> |
357a1db9 JB |
7 | * based upon I2S drivers by Ben Dooks. |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
357a1db9 | 14 | #include <linux/clk.h> |
357a1db9 | 15 | #include <linux/io.h> |
da155d5b | 16 | #include <linux/module.h> |
c5cf4dbc | 17 | #include <linux/pm_runtime.h> |
357a1db9 | 18 | |
357a1db9 | 19 | #include <sound/soc.h> |
0378b6ac | 20 | #include <sound/pcm_params.h> |
357a1db9 | 21 | |
436d42c6 | 22 | #include <linux/platform_data/asoc-s3c.h> |
357a1db9 | 23 | |
4b640cf3 | 24 | #include "dma.h" |
158a7828 | 25 | #include "pcm.h" |
357a1db9 | 26 | |
9c6df19e SY |
27 | /*Register Offsets */ |
28 | #define S3C_PCM_CTL 0x00 | |
29 | #define S3C_PCM_CLKCTL 0x04 | |
30 | #define S3C_PCM_TXFIFO 0x08 | |
31 | #define S3C_PCM_RXFIFO 0x0C | |
32 | #define S3C_PCM_IRQCTL 0x10 | |
33 | #define S3C_PCM_IRQSTAT 0x14 | |
34 | #define S3C_PCM_FIFOSTAT 0x18 | |
35 | #define S3C_PCM_CLRINT 0x20 | |
36 | ||
37 | /* PCM_CTL Bit-Fields */ | |
38 | #define S3C_PCM_CTL_TXDIPSTICK_MASK 0x3f | |
39 | #define S3C_PCM_CTL_TXDIPSTICK_SHIFT 13 | |
40 | #define S3C_PCM_CTL_RXDIPSTICK_MASK 0x3f | |
41 | #define S3C_PCM_CTL_RXDIPSTICK_SHIFT 7 | |
42 | #define S3C_PCM_CTL_TXDMA_EN (0x1 << 6) | |
43 | #define S3C_PCM_CTL_RXDMA_EN (0x1 << 5) | |
44 | #define S3C_PCM_CTL_TXMSB_AFTER_FSYNC (0x1 << 4) | |
45 | #define S3C_PCM_CTL_RXMSB_AFTER_FSYNC (0x1 << 3) | |
46 | #define S3C_PCM_CTL_TXFIFO_EN (0x1 << 2) | |
47 | #define S3C_PCM_CTL_RXFIFO_EN (0x1 << 1) | |
48 | #define S3C_PCM_CTL_ENABLE (0x1 << 0) | |
49 | ||
50 | /* PCM_CLKCTL Bit-Fields */ | |
51 | #define S3C_PCM_CLKCTL_SERCLK_EN (0x1 << 19) | |
52 | #define S3C_PCM_CLKCTL_SERCLKSEL_PCLK (0x1 << 18) | |
53 | #define S3C_PCM_CLKCTL_SCLKDIV_MASK 0x1ff | |
54 | #define S3C_PCM_CLKCTL_SYNCDIV_MASK 0x1ff | |
55 | #define S3C_PCM_CLKCTL_SCLKDIV_SHIFT 9 | |
56 | #define S3C_PCM_CLKCTL_SYNCDIV_SHIFT 0 | |
57 | ||
58 | /* PCM_TXFIFO Bit-Fields */ | |
59 | #define S3C_PCM_TXFIFO_DVALID (0x1 << 16) | |
60 | #define S3C_PCM_TXFIFO_DATA_MSK (0xffff << 0) | |
61 | ||
62 | /* PCM_RXFIFO Bit-Fields */ | |
63 | #define S3C_PCM_RXFIFO_DVALID (0x1 << 16) | |
64 | #define S3C_PCM_RXFIFO_DATA_MSK (0xffff << 0) | |
65 | ||
66 | /* PCM_IRQCTL Bit-Fields */ | |
67 | #define S3C_PCM_IRQCTL_IRQEN (0x1 << 14) | |
68 | #define S3C_PCM_IRQCTL_WRDEN (0x1 << 12) | |
69 | #define S3C_PCM_IRQCTL_TXEMPTYEN (0x1 << 11) | |
70 | #define S3C_PCM_IRQCTL_TXALMSTEMPTYEN (0x1 << 10) | |
71 | #define S3C_PCM_IRQCTL_TXFULLEN (0x1 << 9) | |
72 | #define S3C_PCM_IRQCTL_TXALMSTFULLEN (0x1 << 8) | |
73 | #define S3C_PCM_IRQCTL_TXSTARVEN (0x1 << 7) | |
74 | #define S3C_PCM_IRQCTL_TXERROVRFLEN (0x1 << 6) | |
75 | #define S3C_PCM_IRQCTL_RXEMPTEN (0x1 << 5) | |
76 | #define S3C_PCM_IRQCTL_RXALMSTEMPTEN (0x1 << 4) | |
77 | #define S3C_PCM_IRQCTL_RXFULLEN (0x1 << 3) | |
78 | #define S3C_PCM_IRQCTL_RXALMSTFULLEN (0x1 << 2) | |
79 | #define S3C_PCM_IRQCTL_RXSTARVEN (0x1 << 1) | |
80 | #define S3C_PCM_IRQCTL_RXERROVRFLEN (0x1 << 0) | |
81 | ||
82 | /* PCM_IRQSTAT Bit-Fields */ | |
83 | #define S3C_PCM_IRQSTAT_IRQPND (0x1 << 13) | |
84 | #define S3C_PCM_IRQSTAT_WRD_XFER (0x1 << 12) | |
85 | #define S3C_PCM_IRQSTAT_TXEMPTY (0x1 << 11) | |
86 | #define S3C_PCM_IRQSTAT_TXALMSTEMPTY (0x1 << 10) | |
87 | #define S3C_PCM_IRQSTAT_TXFULL (0x1 << 9) | |
88 | #define S3C_PCM_IRQSTAT_TXALMSTFULL (0x1 << 8) | |
89 | #define S3C_PCM_IRQSTAT_TXSTARV (0x1 << 7) | |
90 | #define S3C_PCM_IRQSTAT_TXERROVRFL (0x1 << 6) | |
91 | #define S3C_PCM_IRQSTAT_RXEMPT (0x1 << 5) | |
92 | #define S3C_PCM_IRQSTAT_RXALMSTEMPT (0x1 << 4) | |
93 | #define S3C_PCM_IRQSTAT_RXFULL (0x1 << 3) | |
94 | #define S3C_PCM_IRQSTAT_RXALMSTFULL (0x1 << 2) | |
95 | #define S3C_PCM_IRQSTAT_RXSTARV (0x1 << 1) | |
96 | #define S3C_PCM_IRQSTAT_RXERROVRFL (0x1 << 0) | |
97 | ||
98 | /* PCM_FIFOSTAT Bit-Fields */ | |
99 | #define S3C_PCM_FIFOSTAT_TXCNT_MSK (0x3f << 14) | |
100 | #define S3C_PCM_FIFOSTAT_TXFIFOEMPTY (0x1 << 13) | |
101 | #define S3C_PCM_FIFOSTAT_TXFIFOALMSTEMPTY (0x1 << 12) | |
102 | #define S3C_PCM_FIFOSTAT_TXFIFOFULL (0x1 << 11) | |
103 | #define S3C_PCM_FIFOSTAT_TXFIFOALMSTFULL (0x1 << 10) | |
104 | #define S3C_PCM_FIFOSTAT_RXCNT_MSK (0x3f << 4) | |
105 | #define S3C_PCM_FIFOSTAT_RXFIFOEMPTY (0x1 << 3) | |
106 | #define S3C_PCM_FIFOSTAT_RXFIFOALMSTEMPTY (0x1 << 2) | |
107 | #define S3C_PCM_FIFOSTAT_RXFIFOFULL (0x1 << 1) | |
108 | #define S3C_PCM_FIFOSTAT_RXFIFOALMSTFULL (0x1 << 0) | |
109 | ||
110 | /** | |
111 | * struct s3c_pcm_info - S3C PCM Controller information | |
112 | * @dev: The parent device passed to use from the probe. | |
113 | * @regs: The pointer to the device register block. | |
114 | * @dma_playback: DMA information for playback channel. | |
115 | * @dma_capture: DMA information for capture channel. | |
116 | */ | |
117 | struct s3c_pcm_info { | |
118 | spinlock_t lock; | |
119 | struct device *dev; | |
120 | void __iomem *regs; | |
121 | ||
122 | unsigned int sclk_per_fs; | |
123 | ||
124 | /* Whether to keep PCMSCLK enabled even when idle(no active xfer) */ | |
125 | unsigned int idleclk; | |
126 | ||
127 | struct clk *pclk; | |
128 | struct clk *cclk; | |
129 | ||
130 | struct s3c_dma_params *dma_playback; | |
131 | struct s3c_dma_params *dma_capture; | |
132 | }; | |
133 | ||
357a1db9 JB |
134 | static struct s3c_dma_params s3c_pcm_stereo_out[] = { |
135 | [0] = { | |
357a1db9 JB |
136 | .dma_size = 4, |
137 | }, | |
138 | [1] = { | |
357a1db9 JB |
139 | .dma_size = 4, |
140 | }, | |
141 | }; | |
142 | ||
143 | static struct s3c_dma_params s3c_pcm_stereo_in[] = { | |
144 | [0] = { | |
357a1db9 JB |
145 | .dma_size = 4, |
146 | }, | |
147 | [1] = { | |
357a1db9 JB |
148 | .dma_size = 4, |
149 | }, | |
150 | }; | |
151 | ||
152 | static struct s3c_pcm_info s3c_pcm[2]; | |
153 | ||
357a1db9 JB |
154 | static void s3c_pcm_snd_txctrl(struct s3c_pcm_info *pcm, int on) |
155 | { | |
156 | void __iomem *regs = pcm->regs; | |
157 | u32 ctl, clkctl; | |
158 | ||
159 | clkctl = readl(regs + S3C_PCM_CLKCTL); | |
160 | ctl = readl(regs + S3C_PCM_CTL); | |
161 | ctl &= ~(S3C_PCM_CTL_TXDIPSTICK_MASK | |
162 | << S3C_PCM_CTL_TXDIPSTICK_SHIFT); | |
163 | ||
164 | if (on) { | |
165 | ctl |= S3C_PCM_CTL_TXDMA_EN; | |
166 | ctl |= S3C_PCM_CTL_TXFIFO_EN; | |
167 | ctl |= S3C_PCM_CTL_ENABLE; | |
29f9e39a | 168 | ctl |= (0x4<<S3C_PCM_CTL_TXDIPSTICK_SHIFT); |
357a1db9 JB |
169 | clkctl |= S3C_PCM_CLKCTL_SERCLK_EN; |
170 | } else { | |
171 | ctl &= ~S3C_PCM_CTL_TXDMA_EN; | |
172 | ctl &= ~S3C_PCM_CTL_TXFIFO_EN; | |
173 | ||
174 | if (!(ctl & S3C_PCM_CTL_RXFIFO_EN)) { | |
175 | ctl &= ~S3C_PCM_CTL_ENABLE; | |
176 | if (!pcm->idleclk) | |
177 | clkctl |= S3C_PCM_CLKCTL_SERCLK_EN; | |
178 | } | |
179 | } | |
180 | ||
181 | writel(clkctl, regs + S3C_PCM_CLKCTL); | |
182 | writel(ctl, regs + S3C_PCM_CTL); | |
183 | } | |
184 | ||
185 | static void s3c_pcm_snd_rxctrl(struct s3c_pcm_info *pcm, int on) | |
186 | { | |
187 | void __iomem *regs = pcm->regs; | |
188 | u32 ctl, clkctl; | |
189 | ||
190 | ctl = readl(regs + S3C_PCM_CTL); | |
191 | clkctl = readl(regs + S3C_PCM_CLKCTL); | |
0cca9012 SY |
192 | ctl &= ~(S3C_PCM_CTL_RXDIPSTICK_MASK |
193 | << S3C_PCM_CTL_RXDIPSTICK_SHIFT); | |
357a1db9 JB |
194 | |
195 | if (on) { | |
196 | ctl |= S3C_PCM_CTL_RXDMA_EN; | |
197 | ctl |= S3C_PCM_CTL_RXFIFO_EN; | |
198 | ctl |= S3C_PCM_CTL_ENABLE; | |
0cca9012 | 199 | ctl |= (0x20<<S3C_PCM_CTL_RXDIPSTICK_SHIFT); |
357a1db9 JB |
200 | clkctl |= S3C_PCM_CLKCTL_SERCLK_EN; |
201 | } else { | |
202 | ctl &= ~S3C_PCM_CTL_RXDMA_EN; | |
203 | ctl &= ~S3C_PCM_CTL_RXFIFO_EN; | |
204 | ||
205 | if (!(ctl & S3C_PCM_CTL_TXFIFO_EN)) { | |
206 | ctl &= ~S3C_PCM_CTL_ENABLE; | |
207 | if (!pcm->idleclk) | |
208 | clkctl |= S3C_PCM_CLKCTL_SERCLK_EN; | |
209 | } | |
210 | } | |
211 | ||
212 | writel(clkctl, regs + S3C_PCM_CLKCTL); | |
213 | writel(ctl, regs + S3C_PCM_CTL); | |
214 | } | |
215 | ||
216 | static int s3c_pcm_trigger(struct snd_pcm_substream *substream, int cmd, | |
217 | struct snd_soc_dai *dai) | |
218 | { | |
219 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 220 | struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(rtd->cpu_dai); |
357a1db9 JB |
221 | unsigned long flags; |
222 | ||
223 | dev_dbg(pcm->dev, "Entered %s\n", __func__); | |
224 | ||
225 | switch (cmd) { | |
226 | case SNDRV_PCM_TRIGGER_START: | |
227 | case SNDRV_PCM_TRIGGER_RESUME: | |
228 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
229 | spin_lock_irqsave(&pcm->lock, flags); | |
230 | ||
231 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
232 | s3c_pcm_snd_rxctrl(pcm, 1); | |
233 | else | |
234 | s3c_pcm_snd_txctrl(pcm, 1); | |
235 | ||
236 | spin_unlock_irqrestore(&pcm->lock, flags); | |
237 | break; | |
238 | ||
239 | case SNDRV_PCM_TRIGGER_STOP: | |
240 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
241 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
242 | spin_lock_irqsave(&pcm->lock, flags); | |
243 | ||
244 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
245 | s3c_pcm_snd_rxctrl(pcm, 0); | |
246 | else | |
247 | s3c_pcm_snd_txctrl(pcm, 0); | |
248 | ||
249 | spin_unlock_irqrestore(&pcm->lock, flags); | |
250 | break; | |
251 | ||
252 | default: | |
253 | return -EINVAL; | |
254 | } | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | static int s3c_pcm_hw_params(struct snd_pcm_substream *substream, | |
260 | struct snd_pcm_hw_params *params, | |
261 | struct snd_soc_dai *socdai) | |
262 | { | |
263 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 264 | struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(rtd->cpu_dai); |
357a1db9 JB |
265 | void __iomem *regs = pcm->regs; |
266 | struct clk *clk; | |
267 | int sclk_div, sync_div; | |
268 | unsigned long flags; | |
269 | u32 clkctl; | |
270 | ||
271 | dev_dbg(pcm->dev, "Entered %s\n", __func__); | |
272 | ||
357a1db9 | 273 | /* Strictly check for sample size */ |
88ce1465 TB |
274 | switch (params_width(params)) { |
275 | case 16: | |
357a1db9 JB |
276 | break; |
277 | default: | |
278 | return -EINVAL; | |
279 | } | |
280 | ||
281 | spin_lock_irqsave(&pcm->lock, flags); | |
282 | ||
283 | /* Get hold of the PCMSOURCE_CLK */ | |
284 | clkctl = readl(regs + S3C_PCM_CLKCTL); | |
285 | if (clkctl & S3C_PCM_CLKCTL_SERCLKSEL_PCLK) | |
286 | clk = pcm->pclk; | |
287 | else | |
288 | clk = pcm->cclk; | |
289 | ||
290 | /* Set the SCLK divider */ | |
291 | sclk_div = clk_get_rate(clk) / pcm->sclk_per_fs / | |
292 | params_rate(params) / 2 - 1; | |
293 | ||
294 | clkctl &= ~(S3C_PCM_CLKCTL_SCLKDIV_MASK | |
295 | << S3C_PCM_CLKCTL_SCLKDIV_SHIFT); | |
296 | clkctl |= ((sclk_div & S3C_PCM_CLKCTL_SCLKDIV_MASK) | |
297 | << S3C_PCM_CLKCTL_SCLKDIV_SHIFT); | |
298 | ||
299 | /* Set the SYNC divider */ | |
300 | sync_div = pcm->sclk_per_fs - 1; | |
301 | ||
302 | clkctl &= ~(S3C_PCM_CLKCTL_SYNCDIV_MASK | |
303 | << S3C_PCM_CLKCTL_SYNCDIV_SHIFT); | |
304 | clkctl |= ((sync_div & S3C_PCM_CLKCTL_SYNCDIV_MASK) | |
305 | << S3C_PCM_CLKCTL_SYNCDIV_SHIFT); | |
306 | ||
307 | writel(clkctl, regs + S3C_PCM_CLKCTL); | |
308 | ||
309 | spin_unlock_irqrestore(&pcm->lock, flags); | |
310 | ||
59cdd9bc | 311 | dev_dbg(pcm->dev, "PCMSOURCE_CLK-%lu SCLK=%ufs SCLK_DIV=%d SYNC_DIV=%d\n", |
357a1db9 JB |
312 | clk_get_rate(clk), pcm->sclk_per_fs, |
313 | sclk_div, sync_div); | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | static int s3c_pcm_set_fmt(struct snd_soc_dai *cpu_dai, | |
319 | unsigned int fmt) | |
320 | { | |
f0fba2ad | 321 | struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai); |
357a1db9 JB |
322 | void __iomem *regs = pcm->regs; |
323 | unsigned long flags; | |
324 | int ret = 0; | |
325 | u32 ctl; | |
326 | ||
327 | dev_dbg(pcm->dev, "Entered %s\n", __func__); | |
328 | ||
329 | spin_lock_irqsave(&pcm->lock, flags); | |
330 | ||
331 | ctl = readl(regs + S3C_PCM_CTL); | |
332 | ||
333 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
68e0c669 SK |
334 | case SND_SOC_DAIFMT_IB_NF: |
335 | /* Nothing to do, IB_NF by default */ | |
357a1db9 JB |
336 | break; |
337 | default: | |
338 | dev_err(pcm->dev, "Unsupported clock inversion!\n"); | |
339 | ret = -EINVAL; | |
340 | goto exit; | |
341 | } | |
342 | ||
343 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
344 | case SND_SOC_DAIFMT_CBS_CFS: | |
345 | /* Nothing to do, Master by default */ | |
346 | break; | |
347 | default: | |
348 | dev_err(pcm->dev, "Unsupported master/slave format!\n"); | |
349 | ret = -EINVAL; | |
350 | goto exit; | |
351 | } | |
352 | ||
353 | switch (fmt & SND_SOC_DAIFMT_CLOCK_MASK) { | |
354 | case SND_SOC_DAIFMT_CONT: | |
355 | pcm->idleclk = 1; | |
356 | break; | |
357 | case SND_SOC_DAIFMT_GATED: | |
358 | pcm->idleclk = 0; | |
359 | break; | |
360 | default: | |
361 | dev_err(pcm->dev, "Invalid Clock gating request!\n"); | |
362 | ret = -EINVAL; | |
363 | goto exit; | |
364 | } | |
365 | ||
366 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
367 | case SND_SOC_DAIFMT_DSP_A: | |
368 | ctl |= S3C_PCM_CTL_TXMSB_AFTER_FSYNC; | |
369 | ctl |= S3C_PCM_CTL_RXMSB_AFTER_FSYNC; | |
370 | break; | |
371 | case SND_SOC_DAIFMT_DSP_B: | |
372 | ctl &= ~S3C_PCM_CTL_TXMSB_AFTER_FSYNC; | |
373 | ctl &= ~S3C_PCM_CTL_RXMSB_AFTER_FSYNC; | |
374 | break; | |
375 | default: | |
376 | dev_err(pcm->dev, "Unsupported data format!\n"); | |
377 | ret = -EINVAL; | |
378 | goto exit; | |
379 | } | |
380 | ||
381 | writel(ctl, regs + S3C_PCM_CTL); | |
382 | ||
383 | exit: | |
384 | spin_unlock_irqrestore(&pcm->lock, flags); | |
385 | ||
386 | return ret; | |
387 | } | |
388 | ||
389 | static int s3c_pcm_set_clkdiv(struct snd_soc_dai *cpu_dai, | |
390 | int div_id, int div) | |
391 | { | |
f0fba2ad | 392 | struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai); |
357a1db9 JB |
393 | |
394 | switch (div_id) { | |
395 | case S3C_PCM_SCLK_PER_FS: | |
396 | pcm->sclk_per_fs = div; | |
397 | break; | |
398 | ||
399 | default: | |
400 | return -EINVAL; | |
401 | } | |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
406 | static int s3c_pcm_set_sysclk(struct snd_soc_dai *cpu_dai, | |
407 | int clk_id, unsigned int freq, int dir) | |
408 | { | |
f0fba2ad | 409 | struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai); |
357a1db9 JB |
410 | void __iomem *regs = pcm->regs; |
411 | u32 clkctl = readl(regs + S3C_PCM_CLKCTL); | |
412 | ||
413 | switch (clk_id) { | |
414 | case S3C_PCM_CLKSRC_PCLK: | |
415 | clkctl |= S3C_PCM_CLKCTL_SERCLKSEL_PCLK; | |
416 | break; | |
417 | ||
418 | case S3C_PCM_CLKSRC_MUX: | |
419 | clkctl &= ~S3C_PCM_CLKCTL_SERCLKSEL_PCLK; | |
420 | ||
421 | if (clk_get_rate(pcm->cclk) != freq) | |
422 | clk_set_rate(pcm->cclk, freq); | |
423 | ||
424 | break; | |
425 | ||
426 | default: | |
427 | return -EINVAL; | |
428 | } | |
429 | ||
430 | writel(clkctl, regs + S3C_PCM_CLKCTL); | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
85e7652d | 435 | static const struct snd_soc_dai_ops s3c_pcm_dai_ops = { |
357a1db9 JB |
436 | .set_sysclk = s3c_pcm_set_sysclk, |
437 | .set_clkdiv = s3c_pcm_set_clkdiv, | |
438 | .trigger = s3c_pcm_trigger, | |
439 | .hw_params = s3c_pcm_hw_params, | |
440 | .set_fmt = s3c_pcm_set_fmt, | |
441 | }; | |
442 | ||
3688569e MB |
443 | static int s3c_pcm_dai_probe(struct snd_soc_dai *dai) |
444 | { | |
445 | struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(dai); | |
446 | ||
447 | snd_soc_dai_init_dma_data(dai, pcm->dma_playback, pcm->dma_capture); | |
448 | ||
449 | return 0; | |
450 | } | |
451 | ||
357a1db9 JB |
452 | #define S3C_PCM_RATES SNDRV_PCM_RATE_8000_96000 |
453 | ||
f0fba2ad | 454 | #define S3C_PCM_DAI_DECLARE \ |
357a1db9 | 455 | .symmetric_rates = 1, \ |
3688569e | 456 | .probe = s3c_pcm_dai_probe, \ |
357a1db9 JB |
457 | .ops = &s3c_pcm_dai_ops, \ |
458 | .playback = { \ | |
459 | .channels_min = 2, \ | |
460 | .channels_max = 2, \ | |
461 | .rates = S3C_PCM_RATES, \ | |
462 | .formats = SNDRV_PCM_FMTBIT_S16_LE, \ | |
463 | }, \ | |
464 | .capture = { \ | |
465 | .channels_min = 2, \ | |
466 | .channels_max = 2, \ | |
467 | .rates = S3C_PCM_RATES, \ | |
468 | .formats = SNDRV_PCM_FMTBIT_S16_LE, \ | |
12280fae | 469 | } |
357a1db9 | 470 | |
5ab2ab6a | 471 | static struct snd_soc_dai_driver s3c_pcm_dai[] = { |
12280fae JB |
472 | [0] = { |
473 | .name = "samsung-pcm.0", | |
474 | S3C_PCM_DAI_DECLARE, | |
475 | }, | |
476 | [1] = { | |
477 | .name = "samsung-pcm.1", | |
478 | S3C_PCM_DAI_DECLARE, | |
479 | }, | |
357a1db9 | 480 | }; |
357a1db9 | 481 | |
fc466ba3 KM |
482 | static const struct snd_soc_component_driver s3c_pcm_component = { |
483 | .name = "s3c-pcm", | |
484 | }; | |
485 | ||
fdca21ad | 486 | static int s3c_pcm_dev_probe(struct platform_device *pdev) |
357a1db9 JB |
487 | { |
488 | struct s3c_pcm_info *pcm; | |
b9a1a743 | 489 | struct resource *mem_res; |
357a1db9 | 490 | struct s3c_audio_pdata *pcm_pdata; |
9bdca822 | 491 | dma_filter_fn filter; |
357a1db9 JB |
492 | int ret; |
493 | ||
494 | /* Check for valid device index */ | |
495 | if ((pdev->id < 0) || pdev->id >= ARRAY_SIZE(s3c_pcm)) { | |
496 | dev_err(&pdev->dev, "id %d out of range\n", pdev->id); | |
497 | return -EINVAL; | |
498 | } | |
499 | ||
500 | pcm_pdata = pdev->dev.platform_data; | |
501 | ||
502 | /* Check for availability of necessary resource */ | |
357a1db9 JB |
503 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
504 | if (!mem_res) { | |
505 | dev_err(&pdev->dev, "Unable to get register resource\n"); | |
506 | return -ENXIO; | |
507 | } | |
508 | ||
509 | if (pcm_pdata && pcm_pdata->cfg_gpio && pcm_pdata->cfg_gpio(pdev)) { | |
510 | dev_err(&pdev->dev, "Unable to configure gpio\n"); | |
511 | return -EINVAL; | |
512 | } | |
513 | ||
514 | pcm = &s3c_pcm[pdev->id]; | |
515 | pcm->dev = &pdev->dev; | |
516 | ||
517 | spin_lock_init(&pcm->lock); | |
518 | ||
357a1db9 JB |
519 | /* Default is 128fs */ |
520 | pcm->sclk_per_fs = 128; | |
521 | ||
1d55417e | 522 | pcm->cclk = devm_clk_get(&pdev->dev, "audio-bus"); |
357a1db9 JB |
523 | if (IS_ERR(pcm->cclk)) { |
524 | dev_err(&pdev->dev, "failed to get audio-bus\n"); | |
525 | ret = PTR_ERR(pcm->cclk); | |
526 | goto err1; | |
527 | } | |
dc2c9eb8 | 528 | clk_prepare_enable(pcm->cclk); |
357a1db9 JB |
529 | |
530 | /* record our pcm structure for later use in the callbacks */ | |
f0fba2ad | 531 | dev_set_drvdata(&pdev->dev, pcm); |
357a1db9 JB |
532 | |
533 | if (!request_mem_region(mem_res->start, | |
534 | resource_size(mem_res), "samsung-pcm")) { | |
535 | dev_err(&pdev->dev, "Unable to request register region\n"); | |
536 | ret = -EBUSY; | |
537 | goto err2; | |
538 | } | |
539 | ||
540 | pcm->regs = ioremap(mem_res->start, 0x100); | |
541 | if (pcm->regs == NULL) { | |
542 | dev_err(&pdev->dev, "cannot ioremap registers\n"); | |
543 | ret = -ENXIO; | |
544 | goto err3; | |
545 | } | |
546 | ||
1d55417e | 547 | pcm->pclk = devm_clk_get(&pdev->dev, "pcm"); |
357a1db9 JB |
548 | if (IS_ERR(pcm->pclk)) { |
549 | dev_err(&pdev->dev, "failed to get pcm_clock\n"); | |
550 | ret = -ENOENT; | |
551 | goto err4; | |
552 | } | |
dc2c9eb8 | 553 | clk_prepare_enable(pcm->pclk); |
357a1db9 | 554 | |
357a1db9 JB |
555 | s3c_pcm_stereo_in[pdev->id].dma_addr = mem_res->start |
556 | + S3C_PCM_RXFIFO; | |
557 | s3c_pcm_stereo_out[pdev->id].dma_addr = mem_res->start | |
558 | + S3C_PCM_TXFIFO; | |
559 | ||
9bdca822 | 560 | filter = NULL; |
b9a1a743 AB |
561 | if (pcm_pdata) { |
562 | s3c_pcm_stereo_in[pdev->id].slave = pcm_pdata->dma_capture; | |
563 | s3c_pcm_stereo_out[pdev->id].slave = pcm_pdata->dma_playback; | |
9bdca822 | 564 | filter = pcm_pdata->dma_filter; |
b9a1a743 | 565 | } |
357a1db9 JB |
566 | |
567 | pcm->dma_capture = &s3c_pcm_stereo_in[pdev->id]; | |
568 | pcm->dma_playback = &s3c_pcm_stereo_out[pdev->id]; | |
569 | ||
c5cf4dbc MB |
570 | pm_runtime_enable(&pdev->dev); |
571 | ||
7253e354 | 572 | ret = devm_snd_soc_register_component(&pdev->dev, &s3c_pcm_component, |
fc466ba3 | 573 | &s3c_pcm_dai[pdev->id], 1); |
0c9f1105 MB |
574 | if (ret != 0) { |
575 | dev_err(&pdev->dev, "failed to get register DAI: %d\n", ret); | |
576 | goto err5; | |
577 | } | |
578 | ||
42a74e77 SN |
579 | ret = samsung_asoc_dma_platform_register(&pdev->dev, filter, |
580 | NULL, NULL); | |
a08485d8 PV |
581 | if (ret) { |
582 | dev_err(&pdev->dev, "failed to get register DMA: %d\n", ret); | |
7253e354 | 583 | goto err5; |
a08485d8 PV |
584 | } |
585 | ||
357a1db9 JB |
586 | return 0; |
587 | ||
588 | err5: | |
dc2c9eb8 | 589 | clk_disable_unprepare(pcm->pclk); |
357a1db9 JB |
590 | err4: |
591 | iounmap(pcm->regs); | |
592 | err3: | |
593 | release_mem_region(mem_res->start, resource_size(mem_res)); | |
594 | err2: | |
dc2c9eb8 | 595 | clk_disable_unprepare(pcm->cclk); |
357a1db9 JB |
596 | err1: |
597 | return ret; | |
598 | } | |
599 | ||
fdca21ad | 600 | static int s3c_pcm_dev_remove(struct platform_device *pdev) |
357a1db9 JB |
601 | { |
602 | struct s3c_pcm_info *pcm = &s3c_pcm[pdev->id]; | |
603 | struct resource *mem_res; | |
604 | ||
c5cf4dbc MB |
605 | pm_runtime_disable(&pdev->dev); |
606 | ||
357a1db9 JB |
607 | iounmap(pcm->regs); |
608 | ||
609 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
610 | release_mem_region(mem_res->start, resource_size(mem_res)); | |
611 | ||
dc2c9eb8 TA |
612 | clk_disable_unprepare(pcm->cclk); |
613 | clk_disable_unprepare(pcm->pclk); | |
357a1db9 JB |
614 | |
615 | return 0; | |
616 | } | |
617 | ||
618 | static struct platform_driver s3c_pcm_driver = { | |
619 | .probe = s3c_pcm_dev_probe, | |
fdca21ad | 620 | .remove = s3c_pcm_dev_remove, |
357a1db9 | 621 | .driver = { |
5fbdedf0 | 622 | .name = "samsung-pcm", |
357a1db9 JB |
623 | }, |
624 | }; | |
625 | ||
e00c3f55 | 626 | module_platform_driver(s3c_pcm_driver); |
357a1db9 JB |
627 | |
628 | /* Module information */ | |
df8ad335 | 629 | MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>"); |
357a1db9 JB |
630 | MODULE_DESCRIPTION("S3C PCM Controller Driver"); |
631 | MODULE_LICENSE("GPL"); | |
5fbdedf0 | 632 | MODULE_ALIAS("platform:samsung-pcm"); |